CN105039962B - A kind of cylinder jacket of diesel engine squeezes carburized silicon face processing unit and the technique handled with it - Google Patents
A kind of cylinder jacket of diesel engine squeezes carburized silicon face processing unit and the technique handled with it Download PDFInfo
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- CN105039962B CN105039962B CN201510543845.XA CN201510543845A CN105039962B CN 105039962 B CN105039962 B CN 105039962B CN 201510543845 A CN201510543845 A CN 201510543845A CN 105039962 B CN105039962 B CN 105039962B
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Abstract
The technique squeezed carburized silicon face processing unit the invention discloses a kind of cylinder jacket of diesel engine and handled with it, processing unit is positioned clamping part, reciprocating rotary part and cylinder sleeve and squeezed by base frame section, cylinder sleeve oozes part and constitutes.Compressed oil cylinder is fixed on portal frame, and reciprocating oil cylinder drives rotation motor to pump, and is oriented to by two guide rods；Squeeze and ooze bar upper end and be connected with rotation motor, lower end is oozed body phase and connected with squeezing；Oil distribution casing, which is enclosed on to squeeze, to be oozed outside bar, and oil distribution casing endoporus is matched, and four pieces of crowded osmotic pressure bars, which are uniformly embedded in squeeze, to be oozed in external circumference, also compact heap, carborundum feeding mouth.The pressure oil of hydraulic system flows to compressed oil cylinder, and clamping cylinder makes clamping cylinder descent of piston compress cylinder sleeve by hydraulic system commutation.Squeezing consolidation pressure oil makes to squeeze osmotic pressure block tensioning cylinder set, and silicon-carbide particles are squeezed and oozes and is mounted to interior surface of cylinder liner, and endoporus polishing is examined, purged and packed, service life was up to 8,000 10000 hours.
Description
Technical field
The technique squeezed carburized silicon face processing unit the present invention relates to a kind of cylinder jacket of diesel engine and handled with it.
Background technology
Cylinder-barrel surface is the main friction surface of diesel engine.The life-span of diesel engine is mainly determined by the abrasion of cylinder jacket
Fixed.With continually strengthening for diesel engine, the condition of work of cylinder jacket is more severe.To extend the life-span of engine, gas is improved
The wearability of cylinder sleeve seems particularly urgent.
The material of cylinder jacket is generally common grey iron (HB170-230), high-phosphorous iron, boron cast iron, vanadium-titanium cast iron etc..Ash
Cast iron cost is low, wears no resistance, and boron cast iron, vanadium-titanium cast iron cost are higher, and wearability is also preferable, at home and abroad apply compared with
Extensively.
The abrasion feature of cylinder jacket is top piston ring top dead center abrasion maximum and forms obvious step, in piston
Worn and torn at the bottom dead centre of ring also more notable.Because the two are local, piston ring movement velocity is zero, is difficult to set up oil film
The friction of boundary condition is formed, so abrasion is larger, and in top dead center, also as atmospheric pressure at this moment is maximum, is burnt simultaneously
Acidic materials in product play corrosiveness to casing wall, so abrasion is especially big.And pars intermedia abrasion be than more uniform,
Here it is the normal wear of cylinder jacket, cylinder jacket is in addition to normal wear, also corrosive wear, the impurity institute in air and machine oil
Abrasion caused by the abrasive material of formation, effect of attrition of these situations also to cylinder jacket is very big.
In order to improve the wearability of cylinder jacket, the alloying elements such as nickel, chromium, copper can be added in cylinder cover material.But it is right
For the engine heavier using load, a small amount of alloying element is added in cylinder jacket, does not ensure that air-casing has enough
Wearability, and adding substantial amounts of expensive alloying elements can greatly increase cylinder jacket cost.In addition, cylinder jacket is except its interior table
Beyond face, the wearability of other surfaces requires actually not high or not wearability requirement.In order to solve this contradiction,
We are often surface-treated in common material interior surface of cylinder liner, to significantly improve its wearability.
At present, the main process of surface treatment of domestic and international cylinder jacket is：Interior surface of cylinder liner chromium plating, copper facing；High-frequency quenching,
Laser quenching；Surface granosealing；Flat roofed mesh honing etc..And chromium plating, the high , Huan Base-on-environment influences of copper facing cost are greatly；The flat-top cob-webbing top gem of a girdle-pendant
Mill, technique manipulation difficulty is big；High-frequency quenching, cylinder jacket is also easy to produce crackle；Laser quenching, equipment investment is big, and production efficiency is not high；
Surface granosealing, the raising of wearability is not notable.
The Wear Resistance Mechanism opened up according to high-phosphorous iron：On the matrix based on pearlite, except in distribution fine platy graphite with
Outside, also it is distributed the hardening phase of high rigidity.The first rubbing surface for mutually forming supporting, soft matrix formation second are hardened in friction process
Rubbing surface.The wearability of Cast Iron Surface is improved and improved with the hardness of hardening phase；With lumpiness it is moderate, distribution homogenizing and improve.Such as
Where the hardening phase of hardness high, lumpiness moderate, be evenly distributed and do not damage cast iron cold and hot working performance is formed in cast iron, always
Be the applicant seek improve cylinder sleeve service life reduce the method and purpose of its cost.
It is a mechanical surface treatment technique that cylinder jacket, which squeezes carburizing SiClx,.Britain " this dongle of Lay " company is early in last century eight
Ten mid-nineties 90s just proposed the technique imagination that cylinder jacket squeezes carburizing SiClx.In its " Qi Fudeng " tank L60 type two-stroke diesel
On machine.Then, the state such as Britain, the U.S., Japan has all made many researchs, but fails in further investigation and popularization and application to obtain
Break through；It is domestic also to carry out some researchs in last century the eighties, but could not also further investigate down.
The content of the invention
The purpose of the present invention is to be directed to above-mentioned present situation, it is desirable to provide one kind can handle common grey iron diesel cylinder sleeve, work
Skill is simple, material and crowded cost of oozing are low, and production efficiency is high, can significantly improve a kind of diesel engine of the wearability of interior surface of cylinder liner
Cylinder jacket squeezes carburized silicon face processing unit and the technique handled with it.
The implementation of the object of the invention is, a kind of to squeeze carburized silicon face processing unit with cylinder jacket of diesel engine, by base
Frame part, cylinder sleeve positioning clamping part, reciprocating rotary part and cylinder sleeve squeeze and ooze part composition；
Compressed oil cylinder is fixed on portal frame, and rotation motor is fixed on the piston rod of reciprocating oil cylinder, drives rotation motor
Pump, and be oriented to by two guide rods；Squeeze and ooze bar upper end and be connected with the output shaft of rotation motor, hypomere stretches into test cylinder (jar)
Body phase company is oozed with squeezing in set, lower end；Oil distribution casing, which is enclosed on to squeeze, oozes 6 tops, and oil distribution casing endoporus oozes that bar is cylindrical to be coordinated for gap with squeezing, with oil
Disk endoporus upper and lower ends are respectively equipped with a rotating seal ring；Four pieces of crowded osmotic pressure bars are uniformly embedded in squeeze vertically to be oozed in external circumference, often
Block squeezes osmotic pressure bar and headed on by two plungers up and down, and respectively binds round one of garter springs up and down in the circumference that four crowded osmotic pressure bars are surrounded,
Compact heap is fixed on the sleeve piston lower end of compressed oil cylinder, and carborundum feeding mouth is fixed on portal frame；Experiment cylinder sleeve is fixed on
On cylinder sleeve positioning tool, cylinder sleeve positioning tool is fixed on pedestal.
It is a kind of to squeeze the technique that carburized silicon face processing unit is handled, pending cylinder of diesel engine with cylinder jacket of diesel engine
Cover on the inner stopper being placed on cylinder sleeve positioning tool and position, the pressure-reducing valve of hydraulic system connects pressure sensor all the way, all the way
Oil distribution casing is connect through solenoid directional control valve two；
The pressure oil of hydraulic system commutates to A3, B3 hydraulic fluid port of compressed oil cylinder through solenoid directional control valve one, then clamping cylinder
Being commutated by hydraulic system makes clamping cylinder descent of piston compress pending cylinder jacket of diesel engine.Squeeze consolidation pressure oil by with
Food tray, squeezes and oozes bar, squeezes and oozes body promotion plunger, makes to squeeze the pending cylinder jacket of diesel engine of osmotic pressure block tensioner, pending to realize
Silicon-carbide particles between cylinder jacket of diesel engine inner surface and crowded osmotic pressure block, which are squeezed, to be oozed and is mounted to pending cylinder jacket of diesel engine
Inner surface, endoporus polishing, is examined, purged and packed；Consolidation pressure is squeezed to be adjusted by pressure-reducing valve；
It is that green silicon carbide+oil base carries attached liquid to squeeze carburizing SiClx treatment fluid, and the green silicon carbide carries attached liquid with oil base
Weight proportion is 8:2；The green silicon carbide specification HV2300,180 mesh；
95 cylinder jacket squeezes carburized silicon face handling process parameter：
Squeeze consolidation pressure：20-25kg/cm2,
Squeeze and ooze the time：1-2 minutes,
Reciprocating speed：60-80 mm/seconds, up and down reciprocatingly speed should be consistent, so that endoporus is into regular reticulate pattern,
Rotary speed：180-200 revs/min,
The feed quantity of carborundum：15-20g/ times.
Using the present invention, common grey iron diesel cylinder sleeve can be handled, is not required to add many precious alloys, so as to very big
The material cost of ground reduction set cylinder, technique is simple, equipment investment is few, material and crowded cost of oozing are low, and production efficiency is high；Can be by hardness
High silicon-carbide particles, are mechanically forcibly pressed into, inlay and be evenly distributed on cylinder jacket of diesel engine inner surface, form one
The configuration of surface of soft matrix, the surface texture of Hard Inclusion and many reticulate pattern chain-wales is planted, so as to significantly increase table in cylinder jacket
The wearability in face.
Brief description of the drawings
The cylinder jacket of diesel engine that Fig. 1 is the present invention squeezes carburized silicon face processing device structure diagram,
Fig. 2 is Fig. 1 I enlarged schematic partial views,
Fig. 3 is Fig. 1 portion P enlarged diagram,
Fig. 4 is the hydraulic schematic diagram of the present invention,
Fig. 5 is cylinder jacket of diesel engine cylinder sleeve structural representation,
Fig. 6 is that silicon-carbide particles inlay inner surface of cylinder liner structural representation.
Embodiment
Reference picture 1,2,3, a kind of cylinder jacket of diesel engine of the invention squeeze carburized silicon face processing unit by base frame section,
Cylinder sleeve positioning clamping part, reciprocating rotary part and cylinder sleeve, which are squeezed, oozes part composition；The base frame section is by pedestal 13, portal frame
2 compositions；Cylinder sleeve positions clamping part by cylinder sleeve positioning tool 12, and compact heap 8, compressed oil cylinder 7 is constituted；Reciprocating rotary part from toward
Multiple oil cylinder 1, guide rod 3, rotation motor 4 is constituted；Cylinder sleeve, which is squeezed, oozes part by oil distribution casing 5, squeezes and oozes bar 6, squeezes and ooze body 10, and four are squeezed and ooze
Press strip 11, plunger 14, carborundum feeding mouth 16 is constituted.
Compressed oil cylinder 7 is fixed on portal frame 2, and rotation motor 4 is fixed on the piston rod of reciprocating oil cylinder 1, drives motor 4
Pump, and be oriented to by two guide rods 3, squeeze and ooze the upper end of bar 6 and be connected with the output shaft of rotation motor 4, lower end is oozed with crowded
Body 10 is connected.Reciprocating oil cylinder, rotation motor driving are squeezed and ooze the crowded of device and ooze bar, are squeezed and are oozed body, squeeze osmotic pressure block reciprocating rotary in cylinder sleeve
Turn, its reciprocating rotary speed is used meter out to reduce the impact and vibration of oil circuit by one-way throttle valve control；Back and forth, revolve
Rotary speed can be shown by flowmeter and be calculated.
Oil distribution casing 5, which is enclosed on to squeeze, oozes the top of bar 6, and the endoporus of oil distribution casing 5 oozes that bar is cylindrical to be coordinated for gap with squeezing, on oil distribution casing endoporus
Lower two ends are respectively equipped with a rotating seal ring, to ensure the sealing of matching part during their relative rotary motions.And provided with rotating through
Oily passage, to ensure the sealing of matching part during their relative rotary motions；Four pieces of crowded osmotic pressure bars 11 are uniformly embedded in crowded vertically
Ooze in the excircle of body 10, every piece of crowded osmotic pressure bar 11 is headed on by two plungers 15 up and down, and the circle surrounded in four crowded osmotic pressure bars 11
Week respectively binds round one of garter springs 14 up and down, is come off (see Fig. 3) in order to avoid squeezing osmotic pressure bar.Hypomere stretches into pending cylinder jacket of diesel engine
9, lower end is oozed body 10 and is connected using sealed multi-directional ball with squeezing, in crowded ooze to make up the error of cylinder sleeve positioning tool in cylinder sleeve
The influence of hole precision.
Oil distribution casing 5 can ooze bar and pump with squeezing, and squeeze and ooze bar and rotated in oil distribution casing endoporus, its effect is
The crowded consolidation pressure oil of hydraulic system is set normally to be flowed into by oil distribution casing in the crowded oil circuit for oozing bar 6 of up and down reciprocatingly rotary motion.Squeeze
Consolidation pressure oil squeezes by oil distribution casing and oozes bar, squeezes and oozes body promotion plunger 15, makes to squeeze osmotic pressure block tensioner cylinder sleeve, to realize table in cylinder sleeve
Silicon-carbide particles between face and crowded osmotic pressure block, which are squeezed, to be oozed and is mounted on inner surface of cylinder liner.
Compact heap 8 is fixed on the sleeve piston lower end of compressed oil cylinder, and carborundum feeding mouth 16 is fixed on portal frame；Experiment
Cylinder sleeve is fixed on cylinder sleeve positioning tool 12, and cylinder sleeve positioning tool is fixed on pedestal 13, increases the stabilization pumped
Property.
On the inner stopper that pending cylinder jacket of diesel engine 9 is placed on cylinder sleeve positioning tool 12 and position, hydraulic system
The tunnel of pressure-reducing valve 24 1 connect pressure sensor, connect oil distribution casing 5 through solenoid directional control valve 2 34 all the way.
Hydraulic system (see Fig. 4) pressure oil commutates to A3, B3 hydraulic fluid port of compressed oil cylinder 7 through solenoid directional control valve 1, clamps
Oil cylinder 7 is commutated by hydraulic system makes clamping cylinder descent of piston compress pending cylinder jacket of diesel engine.Squeeze consolidation pressure oil
By oil distribution casing 5, squeeze and ooze bar 6, squeeze and ooze the promotion plunger 15 of body 10, make to squeeze the pending cylinder jacket of diesel engine of osmotic pressure block tensioner, with
Realize that the silicon-carbide particles 40 between pending cylinder jacket of diesel engine inner surface and crowded osmotic pressure block are squeezed to ooze and be mounted to pending
Cylinder jacket of diesel engine inner surface 41, form the surface shape of a kind of soft matrix, the surface texture of Hard Inclusion and many reticulate pattern chain-wales
State, so as to significantly increase the wearability of interior surface of cylinder liner (see Fig. 6).Consolidation pressure is squeezed to be adjusted by pressure-reducing valve 24.
It is that green silicon carbide+oil base carries attached liquid to squeeze carburizing SiClx treatment fluid, and the green silicon carbide carries attached liquid with oil base
Weight proportion is 8:2；The green silicon carbide specification HV2300,180 mesh.The crowded carburizing SiClx treatment fluid of the present invention is using green carbon
SiClx, it is one kind in carborundum because of green silicon carbide to be, it is squeezed, and to ooze effect preferable；Green silicon carbide oiling base load attached liquid is can
Green silicon carbide is twisted into it is spherical, squeeze ooze when in favor of the feeding of green silicon carbide.
The green silicon carbide specification HV2300,180 mesh.
95 cylinder jacket squeezes carburized silicon face handling process parameter：
Squeeze consolidation pressure：20-25kg/cm2,
Squeeze and ooze the time：1-2 minutes,
Reciprocating speed：60-80 mm/seconds, up and down reciprocatingly speed should be consistent, so that endoporus is into regular reticulate pattern,
Rotary speed：180-200 revs/min,
The feed quantity of carborundum：15-20g/ times.
There are air cleaner 17, oil level oil thermometer 18 in reference picture 4, hydraulic system, oil adsorption filter 19, oil pump 20, connect
Manometric wiring 21, motor 22, the wiring 23 for connecing oil distribution casing, pressure-reducing valve 24, overflow valve 25, the wiring for connecing pressure sensor
26th, solenoid directional control valve 1, one-way throttle valve 28, meet joint A1, B129 of rotation motor, connect the wiring 1 of flowmeter, connect
Joint A2, B231 of reciprocating oil cylinder, connect the wiring 2 32 of flowmeter, meet joint A3, B333 of clamping cylinder, solenoid directional control valve two
34。
The material of pending cylinder jacket of diesel engine 9 is common grey iron cylinder sleeve (HT300), its chemical composition：Carbon 3.2-
3.35；Silicon 1.77-2.66；Phosphorus 0.13-0.38；Chromium≤0.77；Sulphur≤0.1.Metallographic structure：Graphite is in general middle fine platy,
There is point-like；Matrix is substantially pearlite, and ferrite is a small amount of；Iron phosphide eutectic is in net distribution, and it is more that quantity has, and lumpiness is tiny.
Mechanical performance：Hardness HB188-238, tensile strength is 25.5-28kg/mm2, and bending strength is 38-42kg/mm2.It is not required to addition
Many precious alloys, so as to greatly reduce the material cost of set cylinder.
Carburizing SiClx is squeezed to 95 cylinder jacket of diesel engine using the present invention, its endoporus is machined to Φ 95-0.03 before surface treatment,
Surface roughness is Ra0.8.On the inner stopper that 95 cylinder jacket of diesel engine major parts are placed on cylinder sleeve positioning tool 12 and position, press from both sides
The descending compression cylinder jacket of diesel engine of locking oil cylinder：Then adjust and squeeze stroke of the osmotic pressure bar in cylinder sleeve bore, squeeze osmotic pressure bar in diesel oil
When machine interior surface of cylinder liner reciprocating rotary is extruded, it, which squeezes osmotic pressure bar, to squeeze the three of osmotic pressure bar upper and lower ends beyond cylinder sleeve bore two ends
/ mono- length, in favor of the processing quality of the crowded carburizing SiClx of cylinder sleeve bore upper and lower ends part.Finished size is after processing
Φ 95+0.030, surface roughness is Ra0.4, other dimensioneds to finished size.
After average abrasion amount of the boron cast-iron cylinder jacket after six hours artificial wear-tests is 0.1057mm its empirical tests
Wear-resisting actual life is 6000 hours.Using the present invention to regular gray iron material cylinder jacket by squeezing carburizing SiClx table
After the processing of face, through six hours Accelerated wear simulation tests, the wear extent of cylinder jacket was controlled within 0.05mm, and contrast can determine whether
Go out, the expection of cylinder jacket of diesel engine actual life can be improved to 8000-10000 hours.
Reference picture 5, cylinder of diesel engine has put shoulder 35, and body 37 contacted with cooling water is upper and lower upper positioning for it
Cylindrical 36, lower positioning cylindrical 38, block water slot part 39 thereon.
The present invention, which has simple technique, material and squeezed, oozes the spies such as cost is low, equipment investment is few, pollution-free, production efficiency is high
Point.
Claims (2)
1. the technique that cylinder jacket of diesel engine squeezes the processing of carburized silicon face processing unit, it is characterised in that：Pending diesel engine
On the inner stopper that cylinder jacket is placed on cylinder sleeve positioning tool and position, the pressure-reducing valve of hydraulic system connects pressure sensor all the way,
All the way oil distribution casing is connect through solenoid directional control valve two；
The pressure oil of hydraulic system commutates to A3, B3 hydraulic fluid port of compressed oil cylinder through solenoid directional control valve one, and then clamping cylinder passes through
Hydraulic system commutation makes clamping cylinder descent of piston compress pending cylinder jacket of diesel engine；Consolidation pressure oil is squeezed by with oil
Disk, squeezes and oozes bar, squeezes and oozes body promotion plunger, makes to squeeze the pending cylinder jacket of diesel engine of osmotic pressure block tensioner, to realize pending bavin
Silicon-carbide particles between oil machine interior surface of cylinder liner and crowded osmotic pressure block, which are squeezed, to be oozed and is mounted in pending cylinder jacket of diesel engine
Surface, endoporus polishing, is examined, purged and packed；Consolidation pressure is squeezed to be adjusted by pressure-reducing valve；
It is that green silicon carbide+oil base carries attached liquid to squeeze carburizing SiClx treatment fluid, and the green silicon carbide carries the weight of attached liquid with oil base
Match as 8:2；The green silicon carbide specification HV2300,180 mesh；
The cylinder jacket of diesel engine squeezes carburized silicon face handling process parameter：
Squeeze consolidation pressure：20-25kg/cm2,
Squeeze and ooze the time：1-2 minutes,
Reciprocating speed：60-80 mm/seconds, up and down reciprocatingly speed should be consistent, so that endoporus is into regular reticulate pattern,
Rotary speed：180-200 revs/min,
The feed quantity of carborundum：15-20g/ times.
2. according to claim 1 squeeze the technique that carburized silicon face processing unit is handled with cylinder jacket of diesel engine, it is special
Levy and be：Pending cylinder jacket of diesel engine (9) is common grey iron cylinder sleeve, its chemical composition：Carbon 3.2-3.35；Silicon 1.77-
2.66；Phosphorus 0.13-0.38；Chromium≤0.77；Sulphur≤0.1；Metallographic structure：Graphite also has point-like in general middle fine platy；Matrix is
Pearlite, ferrite is a small amount of；Iron phosphide eutectic is in net distribution, and hardness HB188-238, tensile strength is 25.5-28kg/mm2, bending resistance
Intensity is 38-42kg/mm2。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510543845.XA CN105039962B (en) | 2015-08-28 | 2015-08-28 | A kind of cylinder jacket of diesel engine squeezes carburized silicon face processing unit and the technique handled with it |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510543845.XA CN105039962B (en) | 2015-08-28 | 2015-08-28 | A kind of cylinder jacket of diesel engine squeezes carburized silicon face processing unit and the technique handled with it |
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| CN105039962A CN105039962A (en) | 2015-11-11 |
| CN105039962B true CN105039962B (en) | 2017-11-03 |
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| CN115430823B (en) * | 2022-08-17 | 2023-11-07 | 嘉兴立石科技股份有限公司 | Automatic die casting production line of engine cylinder body |
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| DE3509647A1 (en) * | 1985-03-18 | 1986-09-18 | Karsten Dipl.-Ing. 7148 Remseck Laing | Positive displacement pump for abrasive flow media |
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| CN101966700A (en) * | 2009-07-28 | 2011-02-09 | 广西玉柴机器股份有限公司 | Tool and method for pressing injector copper sleeve of cylinder head |
| CN203171423U (en) * | 2012-12-27 | 2013-09-04 | 石家庄金刚凯源动力科技有限公司 | Dry-type cylinder sleeve inner hole honing and holding fixture |
| CN203993529U (en) * | 2014-06-12 | 2014-12-10 | 西安伊德机械制造有限责任公司 | Novel honing machine water filling press-down type fixture |
| CN104612956A (en) * | 2014-12-11 | 2015-05-13 | 无锡市华科力士水液压有限公司 | Variable axial plunger type water pump with full-water lubrication |
| CN204874741U (en) * | 2015-08-28 | 2015-12-16 | 湖北工业大学 | Crowded carborundum surface treatment device that oozes of diesel engine cylinder sleeve |
-
2015
- 2015-08-28 CN CN201510543845.XA patent/CN105039962B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3509647A1 (en) * | 1985-03-18 | 1986-09-18 | Karsten Dipl.-Ing. 7148 Remseck Laing | Positive displacement pump for abrasive flow media |
| CN101966700A (en) * | 2009-07-28 | 2011-02-09 | 广西玉柴机器股份有限公司 | Tool and method for pressing injector copper sleeve of cylinder head |
| CN201604070U (en) * | 2009-12-17 | 2010-10-13 | 宝鸡忠诚机床股份有限公司 | Numerical control vertical type cylinder sleeve honing mill |
| CN203171423U (en) * | 2012-12-27 | 2013-09-04 | 石家庄金刚凯源动力科技有限公司 | Dry-type cylinder sleeve inner hole honing and holding fixture |
| CN203993529U (en) * | 2014-06-12 | 2014-12-10 | 西安伊德机械制造有限责任公司 | Novel honing machine water filling press-down type fixture |
| CN104612956A (en) * | 2014-12-11 | 2015-05-13 | 无锡市华科力士水液压有限公司 | Variable axial plunger type water pump with full-water lubrication |
| CN204874741U (en) * | 2015-08-28 | 2015-12-16 | 湖北工业大学 | Crowded carborundum surface treatment device that oozes of diesel engine cylinder sleeve |
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| CN105039962A (en) | 2015-11-11 |
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